I built a reloading and gunsmith bench in my heated and cooled garage. I probably overbuilt but I used 4" x 4" post as the legs and the rest of the frame out of 2" x 4". For the top I used MDF. Its great and I wouldn't change a thing.
I bought my 12 ft shop bench (with rolling drawers and tons of storage underneath) and a butt ugly (dull) yellow Formica top for $1 at an auction... nobody wanted to haul it off- but me
In the past I’ve built plenty of shelves, but I got some good shelves from Costco for my current garage. I think they were called gorilla shelves? Very strong, great size and easily adjustable shelf height. I like that I can change the height of each shelf for different uses and can take them apart and take them with me if/when we move.
HA! sure enough on those Gorilla Shelves.
I have a set that I bought 4 houses ago.
Still going strong.
And, I've bought cabinets 2nd hand for my man cave
storage.